User Submitted Posts Plugin up to 20230811 on WordPress Shortcode usp_gallery cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in User Submitted Posts Plugin up to 20230811 on WordPress. It has been declared as problematic. The impacted element is the function usp_gallery of the component Shortcode Handler. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2023-4779. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in User Submitted Posts Plugin up to 20230811 on WordPress (WordPress Plugin). Affected by this issue is the function usp_gallery of the component Shortcode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [usp_gallery] shortcode in versions up to, and including, 20230811 due to insufficient input sanitization and output escaping on user supplied attributes like 'before'. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The weakness was released 09/06/2023. The advisory is shared for download at wordfence.com. This vulnerability is handled as CVE-2023-4779 since 09/05/2023. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Applying the patch 2961841 is able to eliminate this problem. The bugfix is ready for download at plugins.trac.wordpress.org.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CNA Base Score: 6.4
CNA Vector (Wordfence): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 2961841

Timelineinfo

09/05/2023 🔍
09/06/2023 +1 days 🔍
09/06/2023 +0 days 🔍
04/10/2026 +947 days 🔍

Sourcesinfo

Advisory: 2961841
Status: Confirmed

CVE: CVE-2023-4779 (🔍)
GCVE (CVE): GCVE-0-2023-4779
GCVE (VulDB): GCVE-100-238916

Entryinfo

Created: 09/06/2023 09:58
Updated: 04/10/2026 15:25
Changes: 09/06/2023 09:58 (53), 10/01/2023 13:46 (1), 10/01/2023 13:52 (11), 04/10/2026 15:25 (16)
Complete: 🔍
Cache ID: 216::103

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